<table width="100%" class="searchPanels" style="background-image: url(images/Fondos/fr2.png); height: 100px;">
    <tr>
        <td height="50px" width="100%">
            <font size="3px" color="purple"> La contrase&ntilde;a debe contener 6 a 8 digitos.</font>
        </td>
    </tr>
</table>